3261091 has 4 divisors (see below), whose sum is σ = 3309832. Its totient is φ = 3212352.

The previous prime is 3261029. The next prime is 3261113. The reversal of 3261091 is 1901623.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1901623 = 359 ⋅5297.

It is a cyclic number.

It is not a de Polignac number, because 3261091 - 2¹⁷ = 3130019 is a prime.

It is a Duffinian number.

3261091 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3261191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24270 + ... + 24403.

It is an arithmetic number, because the mean of its divisors is an integer number (827458).

Almost surely, 2^3261091 is an apocalyptic number.

3261091 is a deficient number, since it is larger than the sum of its proper divisors (48741).

3261091 is an equidigital number, since it uses as much as digits as its factorization.

3261091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48740.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 3261091 is about 1805.8491077607. The cubic root of 3261091 is about 148.2931097714.

The spelling of 3261091 in words is "three million, two hundred sixty-one thousand, ninety-one".